Refrigerating unit mounting



May 19, 1953 R. W. DOEG 2,638,753

REFRIGERATING UNIT MOUNTING Filed July 19, 1950 5 Sheets-Sheet l IN VENTOR.

19mm M5056 BY rroefv f 19? M53 1R. w. DGE@ 2,535,753

REFRIGERATING UNIT MOUNTING Filed July 3.9, 1950 5 Sheess-Shee1I 2 'HMAmmf 4 INVENTOR.

F705' BY RALPH l/z/I 70.55

f, da/fu ArfoRMey May E, H953 R. w. DOE@ 2,538,753

REFRIGERATING UNIT MOUNTING Filed. July 19, 1950 3 Sheets-Sheet 3INVENToR. EMP/f W- 7056 A Trae/vir Patented May 19, 1953 RERIGERATINGUNIT MOUNTING Ralph W. Docg, Detroit, Mich., assigner to Nash-Kelvinator Corporation, Detroit, Mich., a corporation of MarylandApplmtion July 19, 195o, serial No. 114,643

.This invention relates generally to refrigerating apparatus and moreparticularly` to household type refrigerators.`

It is an object of my invention to provide in a household refrigeratoran improved construction and arrangement of cabinet, ue, supports, andmoun'ting in the interests of improving the mounting of a refrigerantmotor-compressor unit in a machinery compartment of thecabinet.

Another object of the invention is to support a refrigerantmotor-compressor unit by means of a single point suspension mounting tothe ends of facilitating assembly `of the refrigerator and of decreasingmotor-compressor operating noises. l

Another object of the-invention is to "provide, in addition to thesingle point suspension, mounting members arranged to limit lateralyieldability of the suspension so as to decrease torque inducedside-sway of the motor-compressor unit.` i Another object of theinvention resides in the provision of supplemental means co-operablewiththe single point suspension means to decrease further audible`vibrations emanating from the motor-compressor unit. i

Further objects and advantages f the present invention will be apparentfrom the `following `description, referenceTTbeing had to theaccompanying drawings, wherein a preferred form of the present inventionisclearly shown.

In the drawings: T T v Fig. l is a front View partly broken awayand insection of a refrigerator embodying features of my invention. T T

Fig. 2 is a sideview partly broken away and in section of therefrigerator; T T T Fig. 3 is an enlarged, fragmentary sectional View ofthe refrigeratontaken along theTTTline 3-3 Tof Fig. 1; TT

Fig. 4 is a fragmentary vertical sectional view `of the refrigerator,taken along the line 4 4 Vof Figi;

Fig. 5 is a rear elevational View of a lower portion of therefrigerator; i u T Fig. 6 is an enlarged vertical sectional View of therefrigerator, taken along the` lineiE-llV of Fig'. 4;

Fig. '7 is taken along the line 'IT-1 of Fig. 6; and T Fig.` 8 Visanother detail view in section, taken along the line BT-T-B of Fig. 3.

Referring `to the drawings by characters of reference, the refrigeratorembodying my invention comprises, in general, a cabinet Vanda refrig- Terating system including a refrigerant evaporator `a detail view "inhorizontal section,

2 Claims. (Cl. (TS2-117.4)

. duit operatively connect the evaporator and the condensing element.The refrigerant delivery condut is preferably a small diameter orcapillary tube adapted to meter liquid refrig-` erant to `theevaporator` insufcient amounts to maintain the evaporator refrigerated.

T TThe cabinet 2] may comprise, in general, a casing 32 and a liner 3.4.`'lheseTrnay be boxshaped.` and suitably spaced apart to receivecabinet.

therebetween any of the well-known types cfheat insulation 36 `todecrease heat leakage into the At thefront ofthe cabinet, the edges ofthe casing 32 and of the liner .till may be spanned by heat breakerstrips 38 te close the opening between said edges and to give a finishedappearance to the front of the cabinet. A Tdoor 4U is provided to Tclosethe front of `the cabinet andmay be hinged to one side of the cabinetproper by suitable hinges 42.

Immediately beneath the evaporator 22, a combination `partition and drippan` M divides the interior of the cabinet into an upper freezf ing`compartment lil and'a lower food storage compartment t8. Beneath thedrip pan lill, a number of shelves 5B may be provided and below thelowermost of the shelves, `the present T cabinet has a pair of laterallypositioned storage drawers 52 and below these a storage bin till.

1 The storage drawers 52 may be supportedon T` tanerT 60.

spiral fashion around the top and sides ofthe slide-ways 56 which maybesecured by any suitable `means to the sides ofthe linert'i. The` bin`Elfi may be"`a`sliding'b`in mounted on slides or may be a tiltablebin,`asT may be desired.`

T The evaporator 22 `may comprise a` refrigerant conduit or coil 58andan extended heat ab#- sorberfin the form of a box-shaped, metal con-The conduit 5B maybe wrapped in container GTG, and may` beT secured inintimate contact therewith by cement or other suitable securing means soas `to attain `efficient heat transfer between the parts.T The conduithas a ,T discharge endconnected to a refrigerant accumulator `62 whichmay be located on` the rear wall of theu container-6B. i In addition tofunctioning as aheat-absorbing surface, the` conatmosphere.

tainer 60 provides a large storage space for the reception of ice trays(not shown) and for foods and other items to be frozen. As shown, theevaporator 22 extends from front to rear of the cabinet andsubstantially across the width thereof to provide large heat absorbingand storage capacity. Adoor 6-3 i ,sprefer.ably provided to close thefront of the container Gil tov avoid loss of cold air therefrom when theouter or main door e@ is opened.

At the bottom of the cabinet, the rear walls of casing 32 and liner illhaveinclinedportions @t and 63, respectively, extending., downwardly andforwardly to the cabinet bottom wall; to`

provide an external recess in the cabinet to serve as a machinerycompartment l!) for the compressor 2li. The machinery compartment'it mayextend substantially the full width, ofthe cab.-

inet and the casing sides may extend down to the bottom of the cabinetto form the sides of the lmachinery compartment,

Overlying 'the rear wall ofV the cabinet is a support and flue member'i2 to induce upward flow of air over and cool the compressor 24 andalso to support the compressor. The `iiue mem- `ber l2 may be formed ofsheet-metal and may have a rear wall 'itl andv opposite sidewalls 1li.At opposite sides of the cabinet Z, the flue member l2A is formedwithoutturned-anges i8 which may be secured, respectively, to similarinturned flanges 8u formed on the side edges of the casing 32. Screws`82, or other suitable securing means, may be used -to secure the nuemember flanges to the casing 4anges du;

The condenser 2t, in the form of a sinuous coil, is mounted ontheinner'surface of the flue member 'i2 to utilize the large 'surface ofthe flue to dissipate the heat of condensation to Bituminouscement, orother suitable securing means, may be providedto'secure vthe Acondenserto `the ue rear wall for emcient heatl transfer therebetween.

Inraccordance with my invention, I' provide a single point suspension ormounting member 8d 4for the compressor -2'4 and support `the `mountingmember byl aY cantilever i8 @which 'I, in turn, support on the flueYmember l2; and -von across member or bar tttcarried by Vthe cabinet. fThe cantilever 85 of thepresentl construction 'is in the vform of ahorizontal` plate vmember and' is arranged to extend transversely to the`cross Ameinber y33 and vto the broa'dsid'e or rear Ywallr it of the`flue member 72. The rear endjof/ the cantilever t is secured-to thesupport-flue member 'l2 in any suitable manner, such 'as by welding adownturned ange 9S of Vthe cantilever /86' to and kflat against theVinner Vsurface vof' the'iiue member l2. Intermediate its ends, 'thecantilever 86 is supportedby the cross member 83 `and may be securedthereto by rivets or by any other suitable means.

Mountedon andadjacentthe free end ofv the cantilever Sii-islthe-mounting member 311 which is a resilient mounting preferablyn theform of a yhelical spring. `The mounting or spring 8d surrounds amotor-compressor support or stud 32 which is secured'atv its lower endto thejtop or dome of a compressor casingjlv for Vvthe motorcompressor.The support or-stud92 :functions also as a vibration-transmitting,member, transmitting vibrations-emanating `from the motor-compressor tothe single mounting springi; The'upper end oft-he-studQZ may be formedWithfahead 95 to seatin a springretainer -which is engaged by the upperend ,ofspringV 34 and urged'thereby .tainen Areinforcing platef tosecure .pad 93. is preferably formed with a hollow boss lill extendinginto the retainer aperture to prevent contact between the metal stud andre- Preferably, the pad 88 is made of rubber, or some suitablerubberized material, which will eiiiciently absorb and dampen audiblevibrations.

The motor-compressor unit 2li may be a socalled sealed type of unit inwhich a suitable ,t compressor (not shown) and a driving electric motorH33 are housed and sealed in a dome-like casing, such as casing Sie. Themotor` i638 is located adjacent the top of the casing Si and comprisesthe usual stator il@ and rotor H2. For further details of thecompressor, reference may be had tomy Patent No. 2,199,486 issued May?,194.0.

As shown more clearly in Fig. 5, the cantilever 86 crosses the member 88substantially midway of the ends thereof andthe free end of thecantilever projects beyond the cross member into the machinerycompartment. where the compresser is hung on the free end of thecantilever by the single mounting spring. `Opposite `ends of the crossmember 88 are secured to the iiue flanges, such as by welding, andvthese anges may be provided with aligning apertures to receivescrews forsecuring the cabinet casing and flue member together. Thus, it will beseen that the flue-member '112, the refrigerant condensing element, andthe motor-compressor supporting structure, including the cross member t8and the cantilever St, can be assembled separately from the cabinetl andthen, as a unitary structure, be mounted on the back of the cabinet. Inthe cabinet rear wall, an opening closed by a plate Il@ and a section ofinsulation allows removal of the evaporator'from the rear of thecabinet, which is advantageous when it is desired to remove the entiresystem and the abovementioned unitary structure from the cabinet forrepair or replacement.

Also forming ya part of the above-mentioned unitary structure is a pairof spaced mounting members i2@ which Aare adapted to limit sidesway ofthe motor-compressor unit induced by the torsional force of operation ofthe compressor. Thel mounting members i2@ each comprise, in general, acushioning member or rubber diaphragm |22'- of tubular' form having anouter, movable end i2-ll-attachedby a bracket 12b tothe motor-compressorcasing M and having yan inner, ixed end il attached to the flue rearwall by a pin |36. In the present construction, the brackets H26 aresecured respectively to the sides of a larger, U-shaped` bracket H32'which may have end portions E313 secured, such as by welding, to theside-of the motor-compressor casing St, adjacent the 'bottom thereof.` Areinforcing plate 136 mayv be'welded or be'otherwise secured to the rearWall of the ue member, and the pins I3@ may have enlarged heads 33welded'to the the parts together. It will be understood thatv inoperation, the

motor-compressor -unit 24 will have-an oscillatory motion about itssingle point suspension, limited by the pair of resilient, sidemountings |22 to the end of absorbing and dampening vibrations generatedby operation of the unit.

Preferably, the motor-compressor unit 24 is secured against movement forshipping purposes and to this end, a screw |40 may be provided (Fig. 8)to secure the bracket |32 to the flue. At the location of the screw |40,the reinforcing plate |36 is offset from the ue member wall and isformed with a conical recess |42 through which the screw extends toengage the bracket |32. A clamping Washer |44 under the head of thescrew is clamped in the recess |36, as shown in dot and dash lines, tohold the unit against movement when in shipment.

From the foregoing description, it will be undesrtood that I haveprovided an improved support and arrangement of a single suspensionmounting for a refrigerant motor-compressor unit at the back of arefrigerator cabinet for general improvement of refrigerators, includingfacilitating their manufacture and assembly. It will further beunderstood that I have reduced audible vibrations of themotor-compressor unit by mounting it on a single suspension mountingmember supplemented by a noise suppressor. In addition, I have providedfor supporting the motor-compressor mounting on the end of a cantileverreinforced by a cross member so as to obtain single point suspension ofthe unit, while at the same time having the unit and associated parts,such as supports, mounting condenser, etc., all carried by the removableflue member.

Although only a preferred form of the invention has been illustrated,and that form described in detail, it will be apparent to those skilledin the art that various modifications may be made therein withoutdeparting from the spirit of the invention or from the scope of theappended claims.

I claim:

l. In refrigerating apparatus, a cabinet having a rear Wall recess, arefrigerant motor-compressor unit received within said recess, said unittending to oscillate about a vertical axis, a nue member overlying saidrecess at the back of the cabinet to induce air flow upwardly over saidmotor-compresser unit, means attaching said ue member to said cabinet, across member inwardly of said flue member and secured at opposite endsto said cabinet, an extension member extending transversely of saidcross member, said extension member being attached at one end thereof tosaid flue member and further being attached intermediate its ends tosaid cross member having a cantilever arm overlying saidmotor-compressor unit, a resilient mounting member carried by said armand supporting said motor-compressor unit, a noise suppressor interposedbetween said resilient mounting member and said arm, a pair of spaceddiaphragm members carried by said flue member below said mounting memberand arranged to move transversely to said axis, and means attaching saidpair of diaphragm members to said motor-compressor unit and to said uemember to limit oscillatory movement of the former.

2. In refrigerating apparatus, an upright support having a laterallyextending arm, a motorcompressor unit below said arm, a single pointspring mounting suspending said unit from said arm, said unit havingoscillatory movement about a vertical axis induced by operating torqueof the unit, and a pair of spaced rubber diaphragms attaching said unitbelow said single point mounting to said upright support between saidsupport and said spring and arranged laterally of the unit foryieldingly opposing oscillatory movement thereof.

RALPH W. DOEG.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,089,748 Clark Mar. 10, 1914 1,139,158 Boerries May 11, 19151,716,150 Replogle June 4, 1929 1,802,485 Smith Apr. 28, 1931 2,204,510Neeson June 11, 1940 2,253,618 Grover Aug. 26, 1941 2,280,554 SteenstrupApr. 21, 1942 2,400,224 Christensen May 14, 1946 2,438,114 Dennedy Mar.23, 1948 2,509,614 Phillip May 30, 1950

